Other Accrued Expenses (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
Payables and Accruals [Abstract]
Advertising and marketing	$ 174		$ 238
Deferred revenue	648		0
Duties	947		797
Freight and handling fees	1,522		1,581
Product development	751		614
Product warranty claim costs	353		41		404	6
Professional fees	1,493		1,757
Sales taxes and VAT	2,057		1,637
Third-party commissions	553		511
Tooling	1,089	[1]	758	[1]
Unrealized loss on foreign currency exchange futures contracts	113		2
Utilities	275		311
Other	3,383		2,982
Total other accrued expenses	$ 13,358		$ 11,229

[1] The tooling accrual balance relates to unearned revenue for tooling that will be sold to customers.