NET INCOME PER COMMON SHARE (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Impact Of Equity Awards [Line Items]
Excluded shares as anti-dilutive when reporting loss	0	913	0	1,025
Earnings Per Share, Basic and Diluted [Abstract]
Net Income (Loss) Attributable to Parent	$ 9,893	$ (3,207)	$ 9,642	$ (4,256)	$ 11,268
Weighted Average Number Of Shares Outstanding Basic	37,344,162	36,685,635	37,308,239	36,668,347
Earnings Per Share Basic	$ 0.26	$ (0.09)	$ 0.26	$ (0.12)
Incremental Common Shares Attributable to Share-based Payment Arrangements	758,421	0	892,442	0
Weighted Average Number Of Diluted Shares Outstanding	38,102,583	36,685,635	38,200,681	36,668,347
Earnings Per Share Diluted	$ 0.26	$ (0.09)	$ 0.25	$ (0.12)
Options Activity [Member]
Impact Of Equity Awards [Line Items]
Excluded shares as anti-dilutive under the treasury stock method	38	50	38	53
Price range of option: from	$ 8.76	$ 5.56	$ 8.20	$ 6.36
Price range of option: to	$ 48.21	$ 48.21	$ 48.21	$ 48.21
Restricted Stock Units Activity [Member]
Impact Of Equity Awards [Line Items]
Excluded shares as anti-dilutive under the treasury stock method	656	1,418	433	1,281
Restricted Stock Units Activity [Member] | Restricted Stock Units Service Conditions [Member]
Impact Of Equity Awards [Line Items]
Excluded shares as anti-dilutive under the treasury stock method	456	1,218	233	1,081
Restricted Stock Units Activity [Member] | Restricted Stock Units Service And Market Conditions But Market Not Met [Member]
Impact Of Equity Awards [Line Items]
Excluded shares as anti-dilutive under the treasury stock method	200	200	200	200