Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Accounts receivable, allowance for doubtful accounts	$ 3,833	$ 4,045
Property and equipment, accumulated depreciation	42,191	39,368
Other intangible assets, accumulated amortization	42,279	38,419
Other Intangible Assets [Member]
Other intangible assets, accumulated amortization	$ 43,664	$ 39,754