CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Accounts receivable, allowance for doubtful accounts	$ 4,045	$ 1,425
Other identifiable intangible assets, accumulated amortization	$ 38,419	$ 34,209
Common stock, par value (usd per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	31,951,960	31,292,596
Common stock, shares outstanding	31,951,960	31,292,596
Other Intangible Assets
Other identifiable intangible assets, accumulated amortization	$ 38,370	$ 34,209