Debt (Details)	12 Months Ended											12 Months Ended			0 Months Ended
	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2013 United States USD ($)	Dec. 31, 2013 United States Maximum USD ($)	Dec. 31, 2013 Europe Maximum USD ($)	Dec. 31, 2013 Domestic Line of Credit United States USD ($)	May 18, 2012 Domestic Line of Credit United States USD ($)	Dec. 31, 2013 Foreign Line of Credit Europe USD ($)	May 18, 2012 Foreign Line of Credit Europe USD ($)	Dec. 31, 2013 Foreign Line of Credit JAPAN USD ($)	Dec. 31, 2013 Revolving Credit Facility USD ($)	Dec. 31, 2012 Revolving Credit Facility USD ($)	May 18, 2012 Revolving Credit Facility USD ($)	Aug. 15, 2012 Revolving Credit Facility Eurodollar Rate From May 18, 2012 to August 15, 2012	Aug. 15, 2012 Revolving Credit Facility Base Rate From May 18, 2012 to August 15, 2012	Dec. 31, 2013 Standby Letters of Credit USD ($)	Dec. 31, 2012 Standby and Import Letters of Credit USD ($)	Jul. 16, 2013 Subsequent Event [Member] Foreign Line of Credit JAPAN USD ($)	Jul. 16, 2013 Subsequent Event [Member] Foreign Line of Credit JAPAN JPY (¥)
Line of Credit Facility [Line Items]
Maximum borrowing capacity								$ 140,000,000		$ 30,000,000				$ 170,000,000
Current borrowing capacity	30,100,000						19,000,000		11,100,000		12,400,000								30,000,000	3,000,000,000
Basis spread on variable rate															2.00%	1.00%
Advances under credit facility					140,000,000	30,000,000
Outstanding loan amount when US and Europe borrowing base calculated quarterly	5,000,000
Borrowing base components, maximum percentage of eligible accounts receivable				85.00%
Borrowing base components, maximum percentage of eligible inventory				65.00%
Borrowing base components, maximum percentage of appraised net orderly liquidation value of eligible inventory				85.00%
Borrowing base components, maximum percentage of appraised fair market value of eligible real estate				60.00%
Borrowing base components, decrease of Original Real Estate Value each calendar month, percent	0.83%
Borrowing base components, maximum Original Real Estate Value				40,000,000
Variable rate of interest during period	2.24%
Line of credit facility, amount outstanding	20,000,000
Consolidated fixed charge coverage ratio												1.00
Covenant liquidity requirement							30,000,000
Letters of credit outstanding, amount																	700,000	400,000
Line of credit facility, available amount											6,000,000
Debt issuance costs capitalized												400,000	2,600,000
Interest expense	2,500,000	2,900,000	3,700,000
Cash paid for interest	$ 1,700,000	$ 2,400,000	$ 2,700,000