Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 10,226	$ 13,732
Trade accounts receivable, less allowance for doubtful accounts of $2,699 at September 30,2012 and $1,926 at December 31, 2011	94,546	99,967
Inventories	25,940	24,672
Prepaid expenses and other current assets	12,524	14,894
Income tax receivable	7,185	5,620
Deferred income taxes	945	682
Total current assets	151,366	159,567
Property and equipment, less accumulated depreciation of $120,231 at September 30, 2012 and $109,925 at December 31, 2011	66,524	60,064
Goodwill, net	211,616	205,365
Other intangible assets, net:
Customer relationships	30,502	41,709
Other	679	354
Deferred income taxes	5,970	5,933
Other assets	6,922	6,521
Total assets	473,579	479,513
Current liabilities:
Trade accounts payable	20,416	18,366
Accrued expenses	57,822	60,636
Deferred income taxes	3,209	3,209
Income taxes payable	1,207	511
Current portion of long-term debt	4,865	21,442
Total current liabilities	87,519	104,164
Long-term liabilities:
Long-term debt	89,833	73,737
Deferred income taxes	14,478	13,476
Other long-term liabilities	12,820	14,211
Total long-term liabilities	117,131	101,424
Stockholders' equity:
Common stock, $0.008 par value, 40,000,000 shares authorized, 31,097,862 and 30,766,517shares issued at September 30, 2012 and December 31, 2011, respectively; 26,037,648 and 25,703,125 shares outstanding at September 30, 2012 and December 31, 2011, respectively	227	225
Additional paid-in capital	208,461	203,811
Retained earnings	114,081	125,619
Accumulated other comprehensive income, net	10,930	9,080
Treasury stock, at cost, 5,060,214 and 5,063,392 shares of common stock at September 30, 2012 and December 31, 2011, respectively	(64,770)	(64,810)
Total stockholders' equity	268,929	273,925
Total liabilities and stockholders' equity	$ 473,579	$ 479,513