Related Party Transactions - Additional Information (Details)						1 Months Ended	3 Months Ended	12 Months Ended
	Jul. 15, 2016 USD ($)	Mar. 17, 2016 USD ($)	Oct. 29, 2015 USD ($)	Oct. 14, 2015 USD ($) period	Sep. 28, 2015 shares	Jan. 31, 2016	Sep. 30, 2015 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($) shares	Apr. 29, 2016 $ / shares	Feb. 08, 2016 USD ($) $ / shares	May 20, 2015 director
Related Party Transaction [Line Items]
Number of board members not re-elected | director												3
Stock receivable from termination of rights agreement | shares									667,576
Intangible assets, net								$ 3,400,000	$ 4,200,000
Gain from TDK transaction (non-cash)								0	(9,100,000)
Maximum percentage of excess cash approved for short-term investment						25.00%
Subscription agreement, incentive compensation of common stock value (in dollars per share) | $ / shares											$ 1.00
Share price (in dollars per share) | $ / shares											$ 0.65
Cash investment limitation		25.00%
Short term investments								22,000,000	0
President
Related Party Transaction [Line Items]
Related party transaction amount	$ 500,000
Director
Related Party Transaction [Line Items]
Expenses from transactions with related party				$ 184,000
Additional possible contingent compensation				$ 260,000
Number of periods to achieve revenue targets | period				3
Duration of target periods				6 months
Reimbursement of Proxy Contest Fees | Investor
Related Party Transaction [Line Items]
Expenses from transactions with related party							$ 600,000
Consulting Fees | Director
Related Party Transaction [Line Items]
Expenses from transactions with related party									300,000
License Agreement Termination
Related Party Transaction [Line Items]
Stock receivable from termination of rights agreement | shares					6,675,764
License Agreement Termination | Affiliated Entity
Related Party Transaction [Line Items]
Value of stock repurchased during period			$ 13,600,000
Restructuring and Other Charges | License Agreement Termination | Affiliated Entity
Related Party Transaction [Line Items]
Gain from TDK transaction (non-cash)			9,100,000
Other Nonoperating Income (Expense)
Related Party Transaction [Line Items]
Accrued performance fees								500,000
Maximum
Related Party Transaction [Line Items]
Subscription agreement, incentive compensation of common stock value (in dollars per share) | $ / shares										$ 1.80
Maximum | President
Related Party Transaction [Line Items]
Consulting fees per week	$ 125,000
Minimum
Related Party Transaction [Line Items]
Subscription agreement, incentive compensation of common stock value (in dollars per share) | $ / shares										$ 1.00
Realization Services, Inc. | President
Related Party Transaction [Line Items]
Consulting services extension term	21 days
Realization Services, Inc. | Consulting Expenses with Realization Services | Affiliated Entity
Related Party Transaction [Line Items]
Expenses from transactions with related party								2,400,000	3,000,000
Clinton Group
Related Party Transaction [Line Items]
Subscription agreement, cash managed		$ 35,000,000									$ 20,000,000
Short term investments								19,500,000
Clinton Group | Other Nonoperating Income (Expense)
Related Party Transaction [Line Items]
Accrued performance fees								500,000
Trading securities, unrealized holding loss								$ 4,500,000
Clinton Relational Opportunity Master Fund, L.P.
Related Party Transaction [Line Items]
Number of individuals elected to the board of directors | director												3
Mr. Barrall | Restructuring and Other Charges | Director
Related Party Transaction [Line Items]
Expenses from transactions with related party									$ 200,000
Connected Data, Inc.
Related Party Transaction [Line Items]
Consideration transferred				$ 6,700,000
Intellectual Property [Member] | License Agreement Termination | Affiliated Entity
Related Party Transaction [Line Items]
Intangible assets, net			$ 4,500,000