XML 13 R39.htm IDEA: XBRL DOCUMENT v2.4.1.9
Subsequent Events Subsequent Events (Details) (QuarterlyDividend-Q1 [Member], Subsequent Event [Member], USD $)
0 Months Ended
May 16, 2015
May 05, 2015
Apr. 29, 2015
QuarterlyDividend-Q1 [Member] | Subsequent Event [Member]
     
Subsequent Event [Line Items]      
Common Stock, Dividends, Per Share, Declared     $ 0.035us-gaap_CommonStockDividendsPerShareDeclared
/ us-gaap_DividendsAxis
= clro_QuarterlyDividendQ1Member
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
Dividends Payable, Date to be Paid May 15, 2015    
Dividends Payable, Date of Record   May 04, 2015