CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash	$ 5,469	$ 10,455
Trade accounts receivable, net of allowances for doubtful accounts of $8,798 in 2013 and $7,204 in 2012	192,003	174,832
Inventories, net	105,271	101,422
Prepaid expenses and other current assets	2,693	3,811
Deferred income taxes	7,713	5,182
Total current assets	313,149	295,702
Property and equipment, net	58,253	58,713
Goodwill	188,110	145,788
Other intangible assets, net of accumulated amortization of $44,410 in 2013 and $31,699 in 2012	69,722	63,189
Other long-term assets	6,043	6,340
Total assets	635,277	569,732
Current liabilities:
Current maturities of long-term debt	26,213	22,057
Trade accounts payable	78,853	74,356
Accrued wages and benefits	20,473	15,216
Federal income taxes payable	853	1,696
Customer advances	3,720	2,996
Other accrued liabilities	18,605	12,131
Total current liabilities	148,717	128,452
Long-term debt, less current maturities	168,372	216,339
Non-current deferred income taxes	21,938	16,448
Commitments and Contingencies (Note 13)
Shareholders' equity:
Common stock, $0.01 par value, 100,000,000 shares authorized; 14,468,485 in 2013 and 14,118,348 in 2012 shares issued	144	141
Additional paid-in capital	109,892	78,554
Retained earnings	193,737	133,590
Accumulated other comprehensive (loss) income	(2,368)	1,059
Treasury stock, at cost (146,871 shares at December 31, 2013 and 141,471 shares at December 31, 2012)	(5,171)	(4,867)
Total shareholders' equity	296,250	208,493
Total liabilities and shareholders' equity	635,277	569,732
Series A Preferred Stock [Member]
Shareholders' equity:
Preferred stock	1	1
Series B Convertible Preferred Stock [Member]
Shareholders' equity:
Preferred stock	$ 15	$ 15