Summary Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 35,075	$ 33,375
Restricted securities	869	884
Receivables, net	23,189	22,863
Inventories	13,508	12,739
Deferred preservation costs	23,726	25,196
Deferred income taxes	6,610	6,210
Prepaid expenses and other	5,655	4,761
Total current assets	108,632	106,028
Property and equipment, net	12,108	12,002
Restricted cash	5,000	5,000
Goodwill	11,365	11,365
Patents, net	1,611	1,784
Trademarks and other intangibles, net	18,151	19,496
Deferred income taxes	13,889	15,659
Other	5,312	4,823
Total assets	176,068	176,157
Current liabilities:
Accounts payable	4,104	4,543
Accrued compensation	6,545	5,406
Accrued procurement fees	4,805	4,675
Accrued expenses and other	3,351	5,583
Deferred income	382	420
Total current liabilities	19,187	20,627
Other	7,339	6,845
Total liabilities	$ 26,526	$ 27,472
Commitments and contingencies
Shareholders' equity:
Preferred stock
Common stock (issued shares of 29,608 in 2015 and 29,229 in 2014)	$ 296	$ 292
Additional paid-in capital	140,073	135,227
Retained earnings	20,292	22,768
Accumulated other comprehensive income (loss)	104	(121)
Treasury stock at cost (shares of 1,265 in 2015 and 1,101 in 2014)	(11,223)	(9,481)
Total shareholders' equity	149,542	148,685
Total liabilities and shareholders' equity	$ 176,068	$ 176,157