NET INCOME PER COMMON SHARE (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Impact Of Equity Awards [Line Items]
Excluded shares as anti-dilutive when reporting loss			0	0
Earnings Per Share, Basic and Diluted [Abstract]
Net Income (Loss) Attributable to Parent	$ 6,473	$ 6,875	$ 15,973	$ 16,517	$ 26,024
Weighted Average Number Of Shares Outstanding Basic	37,692,848	37,385,753	37,685,754	37,334,620
Earnings Per Share Basic	$ 0.17	$ 0.18	$ 0.42	$ 0.44
Incremental Common Shares Attributable to Share-based Payment Arrangements	789,225	767,669	836,368	874,359
Weighted Average Number Of Diluted Shares Outstanding	38,482,073	38,153,422	38,522,122	38,208,979
Earnings Per Share Diluted	$ 0.17	$ 0.18	$ 0.41	$ 0.43
Restricted Stock Units Service And Performance Conditions But Performance Not Met [Member]
Impact Of Equity Awards [Line Items]
Excluded shares as anti-dilutive under the treasury stock method	11,000	0	11,000	0
Options Activity [Member]
Impact Of Equity Awards [Line Items]
Excluded shares as anti-dilutive under the treasury stock method	30,000	36,000	32,000	38,000
Price range of option: from	$ 8.04	$ 8.79	$ 8.04	$ 8.79
Price range of option: to	$ 35.05	$ 48.21	$ 35.05	$ 48.21
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	0	6,000	0	242,000
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	290,000	200,000	290,000	200,000