Income Taxes (Details 2) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2012	Dec. 31, 2013
Current deferred tax assets
State tax	$ 1,685,000		$ 1,415,000
Workers' compensation	1,586,000		1,780,000
Health claims	651,000		601,000
Vacation liability	1,211,000		1,219,000
Allowance for doubtful accounts	156,000		181,000
Inventories	5,685,000us-gaap_DeferredTaxAssetsInventory		6,691,000us-gaap_DeferredTaxAssetsInventory
Sales incentive and advertising allowances	757,000		516,000
Stock-based compensation	3,197,000		2,913,000
Unrealized foreign exchange gain or loss	102,000		124,000
Other, net	(368,000)ssd_DeferredTaxAssetsOtherCurrent		171,000ssd_DeferredTaxAssetsOtherCurrent
Current deferred tax assets, net	14,662,000us-gaap_DeferredTaxAssetsNetCurrent		15,611,000us-gaap_DeferredTaxAssetsNetCurrent
Long-term deferred tax assets (liabilities)
Depreciation	(3,913,000)		(2,671,000)
Goodwill and other intangibles amortization	(10,512,000)		(9,781,000)
Deferred compensation related to stock options	3,315,000		3,191,000
Accrued pension liabilities	1,276,000		0
Uncertain tax positions' unrecognized tax benefits	623,000		1,532,000
Non-United States tax loss carry forward	6,506,000		5,472,000
Tax effect on cumulative translation adjustment	(789,000)		(729,000)
Other	796,000		940,000
Long-term deferred tax assets (liabilities), gross	(2,698,000)		(2,046,000)
Less valuation allowances	(6,754,000)		(5,546,000)
Long-term deferred tax assets (liabilities), net	(9,452,000)		(7,592,000)
Deferred tax assets	22,000,000us-gaap_DeferredTaxAssetsNet		22,000,000us-gaap_DeferredTaxAssetsNet
Deferred tax liabilities	16,800,000us-gaap_DeferredTaxLiabilities		14,100,000us-gaap_DeferredTaxLiabilities
Operating loss carryforwards
Deferred tax valuation allowances	6,800,000		5,500,000
Increase (decrease) in the valuation allowance	(1,300,000)	(4,200,000)
Undistributed earnings indefinitely reinvested	45,600,000	29,000,000	34,800,000
Foreign
Operating loss carryforwards
Pre-tax loss carryforwards	28,000,000
Foreign \| Wholly owned Irish subsidiary
Operating loss carryforwards
Pre-tax loss carryforwards	11,800,000
Foreign \| Expiration, 2014
Operating loss carryforwards
Pre-tax loss carryforwards	400,000
Foreign \| Expiration, 2015
Operating loss carryforwards
Pre-tax loss carryforwards	800,000
Foreign \| Expiration, 2016
Operating loss carryforwards
Pre-tax loss carryforwards	1,700,000
Foreign \| Expiration, 2017
Operating loss carryforwards
Pre-tax loss carryforwards	1,600,000
Foreign \| Expiration, 2018
Operating loss carryforwards
Pre-tax loss carryforwards	$ 2,400,000

The non-current portion of tax effect as of the balance sheet date of the amount of estimated future tax deductions arising from other temporary differences, plus the cumulative amount of the estimated future tax effects attributable to other temporary differences not otherwise specified in this taxonomy that were expensed for tax purposes but capitalized in conformity with generally accepted accounting principles, or which were recognized as revenue under GAAP but not for tax purposes, which will reverse in future periods.

No definition available.