Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 2,554	$ 4,347
Accounts receivable, net	87,024	69,159
Inventories	104,900	90,039
Prepaid expenses and other current assets	6,541	5,655
Deferred income taxes	3,725	3,839
Total current assets	204,744	173,039
Property, plant and equipment, net	105,889	96,218
Goodwill	180,933	179,314
Intangible assets, net	57,789	64,334
Other assets	13,514	15,059
Total assets	562,869	527,964
Current liabilities:
Accounts payable	26,431	30,471
Accrued expenses	18,129	23,703
Current installments of long-term debt and capital lease obligations	6,561	5,632
Total current liabilities	51,121	59,806
Long-term liabilities:
Long-term debt and capital lease obligations, less current installments	286,309	255,067
Other long-term liabilities	3,288	3,405
Deferred income taxes	13,167	8,732
Total long-term liabilities	302,764	267,204
Shareholders' equity:
Common stock, $0.02 par value per share; authorized 28,000,000 shares; issued 12,858,641 and 12,860,023 shares at June 30, 2013 and December 31, 2012, respectively	257	257
Preferred stock, $0.02 par value per share; authorized 2,000,000 shares; none issued at either date	0	0
Additional paid-in capital	92,113	90,839
Accumulated other comprehensive loss	(196)	(49)
Treasury stock, at cost, 14,354 shares at June 30, 2013 and 101,622 shares at December 31, 2012	(80)	(482)
Retained earnings	116,890	110,389
Total shareholders' equity	208,984	200,954
Total liabilities and shareholders' equity	$ 562,869	$ 527,964