Accrued expenses and other current liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Accrued And other current liabilities
Warrant consideration	$ 6,000
Accrued compensation and benefits	4,815
Accrued rebates payable	6,225
Insurance premium financing payable	865
Deferred revenue	0
Other	2,301
Accrued and other current liabilities	47,595
Tax amortization benefit contingency
Accrued And other current liabilities
Contingent consideration	12,332
Working capital settlement
Accrued And other current liabilities
Contingent consideration	$ 15,057
Predecessor
Accrued And other current liabilities
Accrued compensation and benefits		$ 4,268
Accrued rebates payable		3,253
Deferred revenue		2,000
Other		2,536
Accrued and other current liabilities		$ 12,057