Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 33,753	$ 33,240
Accounts receivable, trade (net of allowance for doubtful accounts of $1,036 and $1,014 as of December 31, 2014 and 2013, respectively)	110,219	106,853
Inventories, net	37,383	35,443
Deferred tax assets, current	7,324	8,665
Prepaid expenses and other current assets	14,011	12,494
Total current assets	202,690	196,695
Property and equipment	112,716	110,221
Less: accumulated depreciation and amortization	(60,786)	(54,874)
Property and equipment, net	51,930	55,347
Goodwill	15,897	15,524
Deferred tax assets, non-current	3,664	4,321
Intangible and other assets, net	9,990	13,280
Total assets	284,171	285,167
Current liabilities:
Current portion of long-term debt	2,442	2,111
Accounts payable	18,873	20,895
Accrued expenses and other current liabilities	33,609	38,312
Income taxes payable	1,143	1,205
Total current liabilities	56,067	62,523
Long-term debt, non-current	61,853	63,196
Net pension liability	17,115	17,905
Other liabilities	6,672	8,047
Commitments and contingencies (Note 14)
Stockholders’ equity:
Common stock, no par value; 60,000,000 shares authorized; 41,749,196 and 41,557,238 shares issued as of December 31, 2014 and 2013, respectively	4,834	4,811
Additional paid-in capital	139,312	135,881
Retained earnings	37,784	26,429
Accumulated other comprehensive loss	(21,453)	(15,612)
Treasury stock, at cost (4,008,963 shares as of December 31, 2014 and 2013)	(18,013)	(18,013)
Total stockholders’ equity	142,464	133,496
Total liabilities and stockholders’ equity	284,171	285,167
Series B Preferred Stock
Stockholders’ equity:
Series B Preferred Stock, unlimited shares authorized, none outstanding	$ 0	$ 0