Income Taxes (Details) (USD $)	12 Months Ended
	Dec. 31, 2013 Rate	Dec. 31, 2012 Rate	Dec. 31, 2011 Rate	Dec. 31, 2010
Income Tax Examination [Line Items]
Current Federal Tax Expense (Benefit)	$ (1,790,000)	$ 3,164,000	$ 1,737,000
Current State and Local Tax Expense (Benefit)	(122,000)	312,000	318,000
Current Foreign Tax Expense (Benefit)	1,497,000	2,880,000	2,131,000
Current Income Tax Expense (Benefit)	(415,000)	6,356,000	4,186,000
Deferred Federal Income Tax Expense (Benefit)	(2,378,000)	(18,003,000)	(8,038,000)
Deferred State and Local Income Tax Expense (Benefit)	938,000	(2,799,000)	(818,000)
Deferred Foreign Income Tax Expense (Benefit)	(70,000)	(12,000)	(162,000)
Deferred Income Tax Expense (Benefit)	(1,510,000)	(20,814,000)	(9,018,000)
Income Tax Expense (Benefit)	(1,925,000)	(14,458,000)	(4,832,000)
Income (Loss) from Continuing Operations before Income Taxes, Domestic	(4,860,000)	13,278,000	23,963,000
Income (Loss) from Continuing Operations before Income Taxes, Foreign	6,393,000	16,129,000	(3,569,000)
Deferred Tax Assets, Tax Credit Carryforwards, Research	5,233,000	3,506,000
Deferred Tax Assets Deferred expense reserves and accruals	3,085,000	4,444,000
Deferred Tax Assets, Deferred Income	2,379,000	3,191,000
Deferred Tax Assets, Operating Loss Carryforwards, Domestic	1,900,000	2,351,000
Deferred Tax Assets, Capital Loss Carryforwards	29,000	31,000
Deferred Tax Assets Foreign Operating Loss and Credit Carryforward	6,327,000	2,145,000
Deferred Tax Liabilities, Intangible Assets	11,506,000	12,610,000
Deferred Tax Assets transaction costs	347,000	429,000
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	1,730,000	2,086,000
Deferred Tax Assets, Inventory	3,935,000	3,517,000
Deferred Tax Asset Depreciation	356,000	0
Deferred Tax Assets, Other	223,000	1,946,000
Deferred Tax Assets, Gross	37,050,000	36,256,000
Deferred Tax Assets, Valuation Allowance	(1,646,000)	(1,361,000)
Deferred Tax Assets, Net of Valuation Allowance	35,404,000	34,895,000
Deferred Tax Liabilities, Gross	(1,072,000)	(611,000)
Deferred Tax Assets, Net	34,332,000	34,284,000
Income Tax Reconciliation, Income Tax Expense (Benefit), at Federal Statutory Income Tax Rate	537,000	10,292,000	7,138,000
Income Tax Reconciliation, State and Local Income Taxes	828,000	(698,000)	207,000
Income Tax Reconciliation, Foreign Income Tax Rate Differential	(1,514,000)	1,296,000	1,136,000
Income Tax Reconciliation, Deductions, Qualified Production Activities	0	(915,000)	(536,000)
Income Tax Reconciliation, Change in Deferred Tax Assets Valuation Allowance	(153,000)	(23,313,000)	(12,358,000)
Income Tax Reconciliation, Tax Credits, Research	(1,965,000)	0	(875,000)
Income Tax Reconciliation, Prior Year Income Taxes	401,000	0	0
Income Tax Reconciliation, Other Adjustments	(59,000)	(1,120,000)	456,000
Income Tax Reconciliation, Income Tax Expense (Benefit), at Federal Statutory Income Tax Rate	(126.00%)	(49.00%)	(24.00%)
Operating loss carryforward federal	1,371,000
Operating Loss Carryforward State	399,000
Operating loss carryforward foreign	516,000
Federal AMT Carryforward	0
federal RD credit carryforward	4,068,000
State RD Credit Carryforward	1,165,000
foreign RD credit carryforward	4,386,000
Unrecognized Tax Benefits	1,993,000
Correction for prior year income tax balance	850,000
IRS Audit Adjustment	625,000
Undistributed Earnings of Foreign Subsidiaries	2,524,000
Unrecognixed tax benefit balance	5,706,000	9,566,000	8,476,000	6,724,000
Unrecognized Tax Benefits, Increases Resulting from Prior Period Tax Positions	533,000	486,000	1,358,000
Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions	(4,992,000)	(494,000)	0
Unrecognized Tax Benefits, Increases Resulting from Current Period Tax Positions	599,000	1,098,000	394,000
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations		0	0
Unrecognized Tax Benefit adjustment to income tax expense	4,278,000	6,272,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	(768,000)	557,000	330,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	770,000	1,538,000
Estimated tax reduction for RD	$ 1,300,000	$ 800,000