CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data	Total	Comprehensive Income (Loss)	Common Stock	Treasury Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings
BALANCE at Dec. 31, 2009	$ 305,984		$ 411	$ (33,810)	$ 326,103	$ (181)	$ 13,461
BALANCE (in shares) at Dec. 31, 2009			41,123,365	(3,129,460)
Comprehensive Income (Loss):
Net income (loss)	14,740	14,740					14,740
Realized gain on marketable securities reclassified into earnings, net of tax	181	181				181
Comprehensive Income		14,921
Issuance of Stock:
Issuance of shares for options exercised including tax benefit	1,107			1,982	(875)
Issuance of shares for options exercised including tax benefit (in shares)				183,686
Issuance of restricted stock	250			2,864	(2,614)
Issuance of restricted stock (in shares)				235,122
Shares received in lieu of tax withholding payment on vested restricted stock	(616)			(616)
Shares received in lieu of tax withholding payment on vested restricted stock (in shares)				(50,575)
Tax benefit from vesting of restricted stock	106				106
Forfeiture of unvested restricted stock				(60)	60
Forfeiture of unvested restricted stock (in shares)				(5,610)
Stock-based compensation expense	3,687				3,687
Dividends	(7,581)						(7,581)
Share repurchase	(5,074)			(5,074)
Share repurchase (in shares)				(454,938)
BALANCE at Dec. 31, 2010	312,784		411	(34,714)	326,467		20,620
BALANCE (in shares) at Dec. 31, 2010			41,123,365	(3,221,775)
Comprehensive Income (Loss):
Net income (loss)	(2,008)	(2,008)					(2,008)
Comprehensive Income		(2,008)
Issuance of Stock:
Issuance of shares for options exercised including tax benefit	368			552	(184)
Issuance of shares for options exercised including tax benefit (in shares)				51,250
Issuance of restricted stock				2,488	(2,488)
Issuance of restricted stock (in shares)				230,702
Shares received in lieu of tax withholding payment on vested restricted stock	(654)			(654)
Shares received in lieu of tax withholding payment on vested restricted stock (in shares)				(49,811)
Tax benefit from vesting of restricted stock	54				54
Stock-based compensation expense	2,332				2,332
Dividends	(3,781)						(3,781)
Share repurchase	(3,712)			(3,712)
Share repurchase (in shares)				(357,492)
BALANCE at Jun. 30, 2011	$ 305,383		$ 411	$ (36,040)	$ 326,181		$ 14,831
BALANCE (in shares) at Jun. 30, 2011			41,123,365	(3,347,126)