Description of Business - Additional Information (Detail) (USD $)	0 Months Ended		0 Months Ended				0 Months Ended		0 Months Ended		0 Months Ended
	Jan. 31, 2013	Mar. 07, 2013	Oct. 10, 2014 Tyngsborough Massachusetts	Oct. 10, 2014 Tyngsborough Massachusetts	Oct. 02, 2014 Tyngsborough Massachusetts	Oct. 25, 2014 Tyngsborough Massachusetts Termination of Restated Purchase and Sale Agreement with Tyngsborough Commons, LLC acre	Jul. 29, 2014 Liquidation Basis of Accounting	Jul. 29, 2014 Liquidation Basis of Accounting	Feb. 28, 2014 IBM Patents	Feb. 28, 2014 IBM Patents Patent	May 22, 2014 IQstream Patents	May 22, 2014 IQstream Patents Patent
Entity Information [Line Items]
Sale of facilities and assets, value	$ 18,750,000
Common stock, par value		$ 0.001
Patent sale agreement, number of patents										40		3
Patent sale agreement, number of patent applications										2		6
Amount received from sale of patents									2,000,000		300,000
Ownership of land						102
Estimated potential betterment fee relating to Tyngsborough Land					3,470,000
Sale of facilities and assets, value				2,500,000
Nonrefundable deposit to escrow agent			100,000
Maximum amount payable on breaches of such representations and warranties or obligations				75,000
Expected date to complete sale			Dec. 31, 2014
Additional deposit payment for extension to complete sale			100,000
Purchase Agreement expected period of extension to complete sale			Feb. 27, 2015
Liquidating cash distribution, per share								$ 0.24
Liquidating cash distribution							$ 6,930,000