Consolidated Balance Sheets (USD $)	Dec. 31, 2012	Dec. 31, 2011
ASSETS
Cash and cash equivalents	$ 13,009,000	$ 21,705,000
Restricted securities	323,000	312,000
Receivables:
Trade accounts, net	15,941,000	15,767,000
Other	579,000	1,738,000
Total receivables	16,520,000	17,505,000
Deferred preservation costs	27,954,000	29,039,000
Inventories	10,557,000	7,320,000
Deferred income taxes	6,100,000	5,247,000
Prepaid expenses and other	3,040,000	2,742,000
Total current assets	77,503,000	83,870,000
Property and equipment:
Equipment and software	24,007,000	21,664,000
Furniture and fixtures	4,339,000	4,163,000
Leasehold improvements	29,440,000	29,348,000
Total property and equipment	57,786,000	55,175,000
Less accumulated depreciation and amortization	46,119,000	42,867,000
Net property and equipment	11,667,000	12,308,000
Other assets:
Investment in equity securities	5,908,000	6,248,000
Restricted cash and securities	5,000,000	5,000,000
Goodwill	11,365,000	4,220,000
Patents, less accumulated amortization of $2,530 in 2012 and $2,871 in 2011	2,114,000	2,739,000
Trademarks and other intangibles, less accumulated amortization of $2,886 in 2012 and $1,300 in 2011	21,968,000	17,656,000
Notes receivable	2,000,000
Deferred income taxes	16,564,000	13,265,000
Other	3,067,000	2,558,000
Total assets	157,156,000	147,864,000
LIABILITIES AND SHAREHOLDERS' EQUITY
Accounts payable	3,775,000	4,370,000
Accrued compensation	5,055,000	3,946,000
Accrued procurement fees	4,762,000	3,982,000
Accrued expenses	4,205,000	5,131,000
Deferred income	1,401,000	1,890,000
Other	2,232,000	2,138,000
Total current liabilities	21,430,000	21,457,000
Contingent consideration liability	1,912,000
Other	5,702,000	4,869,000
Total liabilities	29,044,000	26,326,000
Commitments and contingencies
Shareholders' equity:
Preferred stock
Common stock $0.01 par value per share, 75,000 shares authorized, 27,486 shares issued in 2012 and 30,067 shares issued in 2011	275,000	301,000
Additional paid-in capital	122,414,000	135,003,000
Retained earnings (deficit)	5,536,000	(1,037,000)
Accumulated other comprehensive loss	(39,000)	(6,000)
Treasury stock at cost, 14 shares in 2012 and 2,265 shares in 2011	(74,000)	(12,723,000)
Total shareholders' equity	128,112,000	121,538,000
Total liabilities and shareholders' equity	157,156,000	147,864,000
Series A Junior Participating Preferred Stock, 2,000 Shares Authorized, No Shares Issued [Member]
Shareholders' equity:
Preferred stock
Convertible Preferred Stock, 460 Shares Authorized, No Shares Issued [Member]
Shareholders' equity:
Preferred stock