ACCOUNTING POLICIES (Details 5) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings per share
Net income attributable to common shares	$ 3,533	$ 2,693	$ 14,928	$ 5,882	$ 23,715	$ 2,473
Net income per common share—basic:
Net income attributable to common shares-basic (in dollars per share)	$ 0.15	$ 0.11	$ 0.63	$ 0.25
Weighted average common shares outstanding-basic	23,766	23,447	23,692	23,382
Effect of dilutive securities:
Stock options and restricted stock awards (in shares)	680	307	605	129
Weighted average common shares outstanding-diluted	24,446	23,754	24,297	23,511
Net income attributable to common shares-diluted (in dollars per share)	$ 0.14	$ 0.11	$ 0.61	$ 0.25
Stock options and restricted stock awards
Anti-dilutive securities excluded from computation of earnings per share
Anti-dilutive securities excluded from computation of earnings per share (in shares)	6	541	38	546