CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounts receivable, allowance for doubtful accounts	$ 3,245	$ 4,045
Other identifiable intangible assets, accumulated amortization	$ 43,333	$ 38,419
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	32,339,285	31,951,960
Common stock, shares outstanding	32,339,285	31,951,960
Other Intangible Assets
Other identifiable intangible assets, accumulated amortization	$ 43,333	$ 38,419