2.4.0.80022 - Disclosure - Stockholders' equity and earnings per share (Tables)truefalsefalse1false falsefalseFrom2013-01-01to2013-06-30http://www.sec.gov/CIK0001373485duration2013-01-01T00:00:002013-06-30T00:00:001true 1us-gaap_EquityAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Equity [Abstract]2false 2us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><div style="text-indent: 36pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt Times New Roman">Stock option activity summary is presented in the table below:</font></div> <div> <table cellpadding="0" cellspacing="0" style="width: 100%; font: 10pt times new roman; font-size: 10pt; font-family: times new roman"> <tr> <td style="vertical-align: top; width: 49%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 13%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 14%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 15%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: 10pt times new roman">Weighted-</font></div> </td> <td style="vertical-align: top; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr> <td style="vertical-align: top; width: 49%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 13%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 14%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 15%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: 10pt times new roman">average</font></div> </td> <td style="vertical-align: top; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr> <td style="vertical-align: top; width: 49%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 13%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 14%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: 10pt times new roman">Weighted-</font></div> </td> <td style="vertical-align: top; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 15%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: 10pt times new roman">Remaining</font></div> </td> <td style="vertical-align: top; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr> <td style="vertical-align: top; width: 49%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 13%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 14%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: 10pt times new roman">average</font></div> </td> <td style="vertical-align: top; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 15%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: 10pt times new roman">Contractual</font></div> </td> <td style="vertical-align: top; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr> <td style="vertical-align: top; width: 49%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 13%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: 10pt times new roman">Number of</font></div> </td> <td style="vertical-align: top; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 14%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: 10pt times new roman">Exercise</font></div> </td> <td style="vertical-align: top; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 15%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: 10pt times new roman">Term</font></div> </td> <td style="vertical-align: top; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr> <td style="vertical-align: top; width: 49%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 13%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: 10pt times new roman">Shares</font></div> </td> <td style="vertical-align: top; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 1%; border-bottom: black 2px solid"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 14%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: 10pt times new roman">Price</font></div> </td> <td style="vertical-align: top; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 1%; border-bottom: black 2px solid"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: top; width: 15%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><font style="display: inline; font: 10pt times new roman">(years)</font></div> </td> <td style="vertical-align: top; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr style="background-color: #cceeff"> <td style="text-align: left; vertical-align: top; width: 49%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Outstanding at December 31, 2011</font></div> </td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 13%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">87,500</font></div> </td> <td style="vertical-align: bottom; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: bottom; width: 1%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: bottom; width: 14%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">4.80</font></div> </td> <td style="vertical-align: bottom; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 15%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">5.08</font></div> </td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr style="background-color: white"> <td style="text-align: left; vertical-align: top; width: 49%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">  Granted</font></div> </td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 13%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 14%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 15%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr style="background-color: #cceeff"> <td style="text-align: left; vertical-align: top; width: 49%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">  Cancelled</font></div> </td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 13%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 14%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 15%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr style="background-color: white"> <td style="text-align: left; vertical-align: top; width: 49%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">  Exercised</font></div> </td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 13%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 14%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 15%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr style="background-color: #cceeff"> <td style="text-align: left; vertical-align: top; width: 49%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">  Forfeited</font></div> </td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 13%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 14%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 15%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr style="background-color: white"> <td style="text-align: left; vertical-align: top; width: 49%; padding-bottom: 2px"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">  Expired</font></div> </td> <td style="vertical-align: bottom; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 13%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 3%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 1%; border-bottom: black 2px solid"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 14%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 3%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 1%; border-bottom: black 2px solid"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 15%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 1%; padding-bottom: 2px"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr style="background-color: #cceeff"> <td style="text-align: left; vertical-align: top; width: 49%; padding-bottom: 4px"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Outstanding and exercisable at December 31, 2012</font></div> </td> <td style="vertical-align: bottom; width: 1%; padding-bottom: 4px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 13%; border-bottom: black 4px double"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">87,500</font></div> </td> <td style="vertical-align: bottom; width: 3%; padding-bottom: 4px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 1%; border-bottom: black 4px double"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 14%; border-bottom: black 4px double"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">4.80</font></div> </td> <td style="vertical-align: bottom; width: 3%; padding-bottom: 4px"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 1%; border-bottom: black 4px double"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 15%; border-bottom: black 4px double"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">4.08</font></div> </td> <td style="vertical-align: bottom; width: 1%; padding-bottom: 4px"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr style="background-color: white"> <td style="text-align: left; vertical-align: top; width: 49%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">  Granted</font></div> </td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 13%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 14%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 15%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr style="background-color: #cceeff"> <td style="text-align: left; vertical-align: top; width: 49%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">  Cancelled</font></div> </td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 13%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 14%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 15%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr style="background-color: white"> <td style="text-align: left; vertical-align: top; width: 49%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">  Exercised</font></div> </td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 13%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 14%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 15%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr style="background-color: #cceeff"> <td style="text-align: left; vertical-align: top; width: 49%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">  Forfeited</font></div> </td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 13%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 14%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 15%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr style="background-color: white"> <td style="text-align: left; vertical-align: top; width: 49%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">  Expired</font></div> </td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 13%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 1%; border-bottom: black 2px solid"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 14%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 1%; border-bottom: black 2px solid"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 15%; border-bottom: black 2px solid"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">—</font></div> </td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> </tr><tr style="background-color: #cceeff"> <td style="text-align: left; vertical-align: top; width: 49%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Outstanding and exercisable at June 30, 2013</font></div> </td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 13%; border-bottom: black 4px double"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">87,500</font></div> </td> <td style="vertical-align: bottom; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: left; vertical-align: bottom; width: 1%; border-bottom: black 4px double"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">$</font></div> </td> <td style="text-align: right; vertical-align: bottom; width: 14%; border-bottom: black 4px double"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">4.80</font></div> </td> <td style="vertical-align: bottom; width: 3%"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="vertical-align: bottom; width: 1%; border-bottom: black 4px double"><font style="display: inline; font: 10pt times new roman">  </font></td> <td style="text-align: right; vertical-align: bottom; width: 15%; border-bottom: black 4px double"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">3.83</font></div> </td> <td style="vertical-align: bottom; width: 1%"><font style="display: inline; font: 10pt times new roman">  </font></td></tr></table></div></div>falsefalsefalsenonnum:textBlockItemTypenaTabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 false0Schedule of stock option activity summary3false 2us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: center"><div style="text-indent: 36pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt Times New Roman">The fair value of the options granted during 2011 was estimated at the date of grant using the Black-Scholes option-pricing model with the following assumptions:</font></div> <div style="text-indent: 0pt; display: block"><br /> </div> <div> <table cellpadding="0" cellspacing="0" style="width: 100%; font: 10pt times new roman; font-size: 10pt; font-family: times new roman"> <tr style="background-color: #cceeff"> <td style="text-align: left; vertical-align: top; width: 72%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Closing market price of stock on grant date</font></div> </td> <td style="text-align: right; vertical-align: top; width: 13%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">$3.11</font></div> </td> </tr><tr style="background-color: white"> <td style="text-align: left; vertical-align: top; width: 72%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Risk-free interest rate</font></div> </td> <td style="text-align: right; vertical-align: top; width: 13%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">2.43%</font></div> </td> </tr><tr style="background-color: #cceeff"> <td style="text-align: left; vertical-align: top; width: 72%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Dividend yield</font></div> </td> <td style="text-align: right; vertical-align: top; width: 13%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">0.00%</font></div> </td> </tr><tr style="background-color: white"> <td style="text-align: left; vertical-align: top; width: 72%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Volatility factor</font></div> </td> <td style="text-align: right; vertical-align: top; width: 13%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">50%</font></div> </td> </tr><tr style="background-color: #cceeff"> <td style="text-align: left; vertical-align: top; width: 72%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: left"><font style="display: inline; font: 10pt times new roman">Expected life</font></div> </td> <td style="text-align: right; vertical-align: top; width: 13%"> <div style="text-indent: 0pt; display: block; margin-left: 0pt; margin-right: 0pt; text-align: right"><font style="display: inline; font: 10pt times new roman">2.5 years</font></div> </td> </tr></table> </div> </div>falsefalsefalsenonnum:textBlockItemTypenaTabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 false0Schedule of fair value assumptionsfalseStockholders' equity and earnings per share (Tables)UnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://xbres.com/role/StockholdersEquityAndEarningsPerShareTables13