CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 333,485	$ 231,520
Accounts receivable (less allowance for credit losses of $8,717 and $8,789 at December 31, 2021 and 2020, respectively)	312,767	266,566
Inventories	143,039	77,179
Prepaid expenses and other current assets	70,025	48,678
Total current assets	859,316	623,943
Property and equipment, net	105,933	104,022
Operating lease right-of-use assets	69,871	53,766
Goodwill	322,517	216,870
Intangible assets	264,421	171,393
Other non-current assets	31,144	17,682
Total assets	1,653,202	1,187,676
Current liabilities
Current maturities of long-term debt	30,839	23,355
Current maturities of operating lease obligations	23,224	18,758
Current maturities of finance lease obligations	1,747	2,073
Accounts payable	132,705	101,462
Accrued compensation	50,964	45,876
Other current liabilities	68,090	44,951
Total current liabilities	307,569	236,475
Long-term debt	832,193	541,957
Operating lease obligations	46,075	34,413
Finance lease obligations	3,297	2,430
Deferred income taxes	4,819	35
Other long-term liabilities	42,409	53,184
Total liabilities	1,236,362	868,494
Commitments and contingencies (Note 16)
Stockholders’ equity
Preferred Stock; $0.01 par value: 5,000,000 authorized and 0 shares issued and outstanding at December 31, 2021 and 2020, respectively	0	0
Common stock; $0.01 par value: 100,000,000 authorized, 33,271,659 and 33,141,879 issued and 29,706,401 and 29,623,272 shares outstanding at December 31, 2021 and 2020, respectively	333	331
Additional paid in capital	211,430	199,847
Retained earnings	352,543	269,420
Treasury stock; at cost: 3,565,258 and 3,518,607 shares at December 31, 2021 and 2020, respectively	(147,239)	(141,653)
Accumulated other comprehensive loss	(227)	(8,763)
Total stockholders’ equity	416,840	319,182
Total liabilities and stockholders’ equity	1,653,202	1,187,676
Customer relationships
Current assets
Intangible assets	178,264	108,504
Other intangibles, net
Current assets
Intangible assets	$ 86,157	$ 62,889