Consolidated Valuation Accounts

12 Months Ended

Dec. 31, 2016

Valuation And Qualifying Accounts [Abstract]

Consolidated Valuation Accounts

Schedule II

WEST CORPORATION AND SUBSIDIARIES

CONSOLIDATED VALUATION ACCOUNTS

THREE YEARS ENDED DECEMBER 31, 2016

					Additions-
			Reserves		Charged		Deductions-
	Balance		Obtained		to Cost		Amounts
	Beginning		in		and		Charged-			Balance
Description (amounts in thousands)	of Year		Acquisitions		Expenses		Off			End of Year
December 31, 2016—Allowance for doubtful    accounts—Accounts receivable	$	7,270	$	—	$	916	$	(1,448	)	$	6,738
December 31, 2015—Allowance for doubtful    accounts—Accounts receivable	$	7,544	$	—	$	3,317	$	(3,591	)	$	7,270
December 31, 2014—Allowance for doubtful    accounts—Accounts receivable	$	8,415	$	774	$	509	$	(2,154	)	$	7,544

			Valuation
			Allowance
	Balance		Obtained
	Beginning		in							Balance
	of Year		Acquisitions		Additions		Deductions			End of Year
December 31, 2016—Allowance for deferred income tax    asset valuation	$	100,205	$	—	$	2,385	$	—		$	102,590
December 31, 2015—Allowance for deferred income tax    asset valuation	$	109,240	$	—	$	—	$	(9,035	)	$	100,205
December 31, 2014—Allowance for deferred income tax    asset valuation	$	109,677	$	—	$	1,162	$	(1,599	)	$	109,240