VALUATION AND QUALIFYING ACCOUNTS

12 Months Ended

Dec. 31, 2016

Valuation and Qualifying Accounts [Abstract]

VALUATION AND QUALIFYING ACCOUNTS

SCHEDULE II

SPOK HOLDINGS, INC.

VALUATION AND QUALIFYING ACCOUNTS

Allowance for Doubtful Accounts, Service Credits and Other	Balance at the Beginning of the Period		Charged to Operations		Write-offs			Balance at the End of the Period
	(Dollars in thousands)
Year ended December 31, 2016	$	1,286	$	761	$	(991	)	$	1,056
Year ended December 31, 2015	$	1,300	$	1,290	$	(1,304	)	$	1,286
Year ended December 31, 2014	$	2,221	$	1,128	$	(2,049	)	$	1,300

Inventory Excess and Obsolete Reserves	Balance at the Beginning of the Period		Charged to Operations		Write-offs			Balance at the End of the Period
	(Dollars in thousands)
Year ended December 31, 2016	$	214	$	—	$	(214	)	$	—
Year ended December 31, 2015	$	175	$	1,066	$	(1,027	)	$	214
Year ended December 31, 2014	$	75	$	100	$	—		$	175

Deferred Income Tax Asset Valuation Allowance	Balance at the Beginning of the Period		Additions		Deductions			Balance at the End of the Period
	(Dollars in thousands)
Year ended December 31, 2016	$	50,031	$	—	$	(50,031	)	$	—
Year ended December 31, 2015	$	114,190	$	—	$	(64,159	)	$	50,031
Year ended December 31, 2014	$	119,277	$	—	$	(5,087	)	$	114,190