Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 61,412	$ 33,766
Restricted securities	546	528
Receivables:
Trade accounts, net	45,964	52,940
Other	2,788	2,921
Total receivables	48,752	55,861
Inventories	73,038	53,071
Deferred preservation costs	36,546	32,551
Prepaid expenses and other	14,295	11,613
Total current assets	234,589	187,390
Property and equipment:
Equipment and software	66,141	61,271
Furniture and fixtures	6,186	5,650
Leasehold improvements	38,256	36,173
Total property and equipment	110,583	103,094
Less accumulated depreciation and amortization	77,506	70,944
Net property and equipment	33,077	32,150
Operating lease right-of-use assets, net	18,571	21,994
Goodwill	260,061	186,697
Acquired technology, less accumulated amortization of $36,091 as of December 31, 2020 and $24,778 as of December 31, 2019	186,091	115,415
Other Intangibles, less accumulated amortization of $17,667 as of December 31, 2020 and $13,460 as of December 31, 2019	40,966	42,319
Deferred income taxes	1,446	5,481
Other	14,603	14,208
Total assets	789,404	605,654
Current liabilities:
Accrued expenses	7,472	6,733
Accrued compensation	10,192	12,260
Accounts payable	9,623	9,796
Taxes payable	2,808	2,984
Accrued procurement fees	3,619	4,362
Current portion of finance lease obligation	614	597
Current maturities of operating leases	5,763	5,487
Current portion of long-term debt	1,195	1,164
Current portion of contingent consideration	16,430
Other	2,752	1,812
Total current liabilities	60,468	45,195
Long-term debt	290,468	214,571
Deferred income taxes	34,713	25,844
Non-current maturities of operating leases	14,034	17,918
Non-current finance leases obligations	5,300	5,415
Contingent consideration	43,500
Deferred compensation liability	5,518	4,434
Other	6,690	6,581
Total liabilities	460,691	319,958
Commitments and contingencies
Shareholders' equity:
Preferred stock $0.01 par value per share, 5,000 shares authorized, no shares issued
Common stock $0.01 par value per share, 75,000 shares authorized, 40,394 and 39,018 shares issued as of December 31, 2020 and 2019, respectively	404	390
Additional paid-in capital	316,192	271,782
Retained earnings	20,022	36,704
Accumulated other comprehensive income (loss)	6,743	(8,589)
Treasury stock at cost, 1,487 and 1,484 shares as of December 31, 2020 and 2019, respectively	(14,648)	(14,591)
Total shareholders' equity	328,713	285,696
Total liabilities and shareholders' equity	$ 789,404	$ 605,654