Commitments and Contingencies (Details) € in Millions						3 Months Ended			12 Months Ended
	Apr. 02, 2015	Mar. 23, 2015 EUR (€)	Mar. 23, 2015 USD ($)	Sep. 16, 2013 USD ($)	Apr. 27, 2012 USD ($)	Mar. 31, 2016 USD ($)	Jun. 30, 2015	Mar. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2010 defendant
Loss Contingencies [Line Items]
Number of defendants | defendant										4
Probable or reasonably possible loss						$ 0
Operating leases, future minimum payments due						5,000,000
Operating leases, future minimum, sublease receipts						1,300,000
Rent expense						600,000		$ 500,000
Amount of contribution									$ 15,400,000
Amount of companies cumulative investment and spending						18,800,000
Penalty amount						$ 1,500,000
Number of days in which penalty needs to be paid						30 days
Cure period						90 days
Penalty payment derivative						$ 400,000
Proceeds from public stock offering, net of offering costs					$ 39,800,000
Revenue						99,145,000		$ 81,384,000
Securities lock up agreement period	60 days						180 days
Pending Litigation Member
Loss Contingencies [Line Items]
Partial settlement of claims				$ 492,000
Accrual for estimated net litigation expense		€ 1	$ 1,100,000
Embedded Derivative Financial Instruments [Member]
Loss Contingencies [Line Items]
Other non-current liability						5,000,000
Russia
Loss Contingencies [Line Items]
Exit fees						3,500,000
Exit fees for future						2,000,000
Private Placement [Member] | Embedded Derivative Financial Instruments [Member]
Loss Contingencies [Line Items]
Penalty payment derivative						100,000
Additional paid-in capital						4,900,000
Private Placement [Member] | Performance Guarantee [Member]
Loss Contingencies [Line Items]
Other non-current liability						$ 30,000,000