Accounts payable and accrued liabilities (Tables)

3 Months Ended

Mar. 31, 2013

Payables And Accruals [Abstract]

Accounts Payable and Accrued Liabilities

	December 31, 2012		March 31, 2013
	(In thousands)
Accounts payable	$	2,797	$	2,779
Accrued liabilities:
Employee benefits		6,541		3,228
Taxes other than on income		439		483
Customer tooling		282		341
Insurance		305		257
Professional		189		221
Other		508		620
Total accounts payable and accrued liabilities	$	11,061	$	7,929