Income Taxes (Details) (USD $)	12 Months Ended
	Dec. 31, 2012 Rate	Dec. 31, 2011 Rate	Dec. 31, 2010 Rate	Dec. 31, 2009
Income Tax Examination [Line Items]
Current Federal Tax Expense (Benefit)	$ 3,164,000	$ 1,737,000	$ 743,000
Current State and Local Tax Expense (Benefit)	312,000	318,000	124,000
Current Foreign Tax Expense (Benefit)	2,880,000	2,131,000	2,807,000
Current Income Tax Expense (Benefit)	6,356,000	4,186,000	3,674,000
Deferred Federal Income Tax Expense (Benefit)	(18,003,000)	(8,038,000)	0
Deferred State and Local Income Tax Expense (Benefit)	(2,799,000)	(818,000)	(167,000)
Deferred Foreign Income Tax Expense (Benefit)	(12,000)	(162,000)	15,000
Deferred Income Tax Expense (Benefit)	(20,814,000)	(9,018,000)	(152,000)
Income Tax Expense (Benefit)	(14,458,000)	(4,832,000)	3,522,000
Income (Loss) from Continuing Operations before Income Taxes, Domestic	13,278,000	23,963,000	16,284,000
Income (Loss) from Continuing Operations before Income Taxes, Foreign	16,129,000	(3,569,000)	14,253,000
Deferred Tax Assets, Tax Credit Carryforwards, Research	5,290,000	7,574,000
Deferred Tax Assets Deferred expense reserves and accruals	4,444,000	4,059,000
Deferred Tax Assets, Deferred Income	3,191,000	2,035,000
Deferred Tax Assets, Operating Loss Carryforwards, Domestic	2,288,000	690,000
Deferred Tax Assets, Capital Loss Carryforwards	31,000	71,000
Deferred Tax Assets Foreign Operating Loss and Credit Carryforward	2,145,000	1,586,000
Deferred Tax Liabilities, Intangible Assets	12,610,000	13,944,000
Deferred Tax Assets transaction costs	429,000	472,000
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	2,086,000	2,000,000
Deferred Tax Assets, Inventory	1,797,000	4,077,000
Deferred Tax Assets, Other	2,261,000	862,000
Deferred Tax Assets, Gross	36,572,000	37,370,000
Deferred Tax Assets, Valuation Allowance	(1,361,000)	(24,674,000)
Deferred Tax Assets, Net of Valuation Allowance	35,211,000	12,696,000
Deferred Tax Liabilities, Gross	(611,000)	(456,000)
Deferred Tax Assets, Net	34,600,000	12,240,000
Income Tax Reconciliation, Income Tax Expense (Benefit), at Federal Statutory Income Tax Rate	10,292,000	7,138,000	10,687,000
Income Tax Reconciliation, State and Local Income Taxes	(698,000)	207,000	468,000
Income Tax Reconciliation, Foreign Income Tax Rate Differential	1,296,000	1,136,000	0
Income Tax Reconciliation, Deductions, Qualified Production Activities	(915,000)	(536,000)	(573,000)
Income Tax Reconciliation, Change in Deferred Tax Assets Valuation Allowance	(23,313,000)	(12,358,000)	(6,553,000)
Income Tax Reconciliation, Prior Year Income Taxes	0	0	(414,000)
Income Tax Reconciliation, Other Adjustments	(1,120,000)	(419,000)	(93,000)
Income Tax Reconciliation, Income Tax Expense (Benefit), at Federal Statutory Income Tax Rate	(49.00%)	(24.00%)	12.00%
Operating Loss Carryforward State	13,687
federal RD credit carryforward	3,406,000
State RD Credit Carryforward	1,859,000
foreign RD credit carryforward	2,145,000
Undistributed Earnings of Foreign Subsidiaries	3,147,000
Unrecognixed tax benefit balance	9,566,000	8,476,000	6,724,000	5,531,000
Unrecognized Tax Benefits, Increases Resulting from Prior Period Tax Positions	(8,000)	1,358,000	982,000
Unrecognized Tax Benefits, Increases Resulting from Current Period Tax Positions	1,098,000	394,000	211,000
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations	0	0	0
Unrecognized Tax Benefit adjustment to income tax expense	6,272,000	6,118,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	1,538,000	566,000
Estimated tax reduction for RD	$ 800,000