Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 63,383	$ 33,766
Restricted securities	494	528
Trade receivables, net	48,723	52,940
Other receivables	2,951	2,921
Inventories	54,300	53,071
Deferred preservation costs	32,918	32,551
Prepaid expenses and other	11,313	11,613
Total current assets	214,082	187,390
Property and equipment, net	31,878	32,150
Operating lease right-of-use assets, net	20,423	21,994
Goodwill	184,014	186,697
Acquired technology, net	111,136	115,415
Other intangibles, net	41,242	42,319
Deferred income taxes	4,769	5,481
Other assets	13,489	14,208
Total assets	621,033	605,654
Current liabilities:
Accounts payable	10,453	9,796
Accrued compensation	9,783	12,260
Accrued procurement fees	4,030	4,362
Current portion of finance lease obligation	569	597
Current maturities of operating leases	5,442	5,487
Current portion of long-term debt	1,155	1,164
Taxes payable	2,692	2,984
Accrued expenses and other	10,130	9,142
Total current liabilities	43,685	45,195
Long-term debt	244,227	214,571
Deferred income taxes	24,268	25,844
Non-current maturities of operating leases	16,411	17,918
Non-current finance lease obligations	5,147	5,415
Deferred compensation liability	4,084	4,434
Other	11,749	11,996
Total liabilities	344,424	319,958
Commitments and contingencies
Shareholders' equity:
Preferred stock
Common stock (issued shares of 39,219 in 2020 and 39,018 in 2019)	392	390
Additional paid-in capital	273,821	271,782
Retained earnings	30,039	36,704
Accumulated other comprehensive loss	(13,052)	(8,589)
Treasury stock at cost (shares of 1,484 in each of 2020 and 2019)	(14,591)	(14,591)
Total shareholders' equity	276,609	285,696
Total liabilities and shareholders' equity	$ 621,033	$ 605,654