Consolidated Statement of Shareholders' Equity Statement - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]
Beginning Balance, Shares		27,788,000
Beginning balance	$ 535,322	$ 278	$ 172,771	$ 367,021	$ (4,748)
Issuance of common stock under employee stock plans (in shares)		77,000
Stock Issued During Period, Value, Stock Options Exercised	2,563	$ 1	2,562
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures (in shares)		231,000
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	0	$ 2	(2)
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	6,864		6,864
Shares Paid for Tax Withholding for Share Based Compensation (in shares)		(58,000)
Stock Withheld to Cover Tax Withholding Requirements Upon Vesting to Restricted Stock Units Amount	(7,212)	$ (1)	(7,211)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	2,550				2,550
Adjustments to Additional Paid in Capital Directors Deferred Compensation	16		16
Net (loss) income	22,520			22,520
Beginning Balance, Shares		28,038,000
Beginning balance	$ 562,623	$ 280	175,000	389,541	(2,198)
Beginning Balance, Shares	28,352,000	28,352,000
Beginning balance	$ 652,069	$ 284	196,455	452,321	3,009
Issuance of common stock under employee stock plans (in shares)		40,000
Stock Issued During Period, Value, Stock Options Exercised	934	$ 0	934
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures (in shares)		193,000
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	0	$ 2	(2)
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	5,191		5,191
Shares Paid for Tax Withholding for Share Based Compensation (in shares)		(45,000)
Stock Withheld to Cover Tax Withholding Requirements Upon Vesting to Restricted Stock Units Amount	(1,816)	$ 0	(1,816)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	3,275				3,275
Adjustments to Additional Paid in Capital Directors Deferred Compensation	21		21
Net (loss) income	$ (18,135)			(18,135)
Stock Repurchased and Retired During Period, Shares	(663,602)
Stock Repurchased and Retired During Period, Value	$ (25,000)	$ (7)	(24,993)
Beginning Balance, Shares	27,876,000	27,876,000
Beginning balance	$ 616,539	$ 279	$ 175,790	$ 434,186	$ 6,284