Accumulated Other Comprehensive Loss (Tables)

9 Months Ended

Sep. 30, 2018

Accumulated Other Comprehensive Loss [Abstract]

Components of Accumulated Other Comprehensive Loss

The components of accumulated other comprehensive loss, net of tax, are as follows (in thousands):

			Equity in		Accumulated
			Telesat Other		Other
	Postretirement		Comprehensive		Comprehensive
	Benefits		Income (Loss)		Loss
Balance, January 1, 2017	$	(14,074)	$	238	$	(13,836)
Other comprehensive loss before reclassification		(1,365)		(18,280)		(19,645)
Amounts reclassified from accumulated other comprehensive loss		671		—		671
Net current-period other comprehensive loss		(694)		(18,280)		(18,974)
Tax Cuts and Jobs Act, reclassification of tax effect from
accumulated other comprehensive loss to accumulated deficit		(1,686)		(2,782)		(4,468)
Balance, December 31, 2017		(16,454)		(20,824)		(37,278)
Other comprehensive income before reclassification		—		1,733		1,733
Amounts reclassified from accumulated other comprehensive loss		629		—		629
Net current-period other comprehensive income		629		1,733		2,362
Balance, September 30, 2018	$	(15,825)	$	(19,091)	$	(34,916)

Schedule of Other Comprehensive Income (Loss) and Related Income Tax Effects

The components of other comprehensive income (loss) and related tax effects are as follows (in thousands):

	Three Months Ended September 30,
	2018							2017
	Before-Tax			Tax		Net-of-Tax		Before-Tax			Tax		Net-of-Tax
	Amount			Provision		Amount		Amount			Provision		Amount
Amortization of prior service credits
and net actuarial loss	$	265	(a)	$	(56)	$	209	$	257	(a)	$	(90)	$	167
Equity in Telesat other comprehensive
loss		(7,115)			1,496		(5,619)		(19,255)			6,732		(12,523)
Other comprehensive loss	$	(6,850)		$	1,440	$	(5,410)	$	(18,998)		$	6,642	$	(12,356)

	Nine Months Ended September 30,
	2018							2017
	Before-Tax			Tax		Net-of-Tax		Before-Tax			Tax		Net-of-Tax
	Amount			Provision		Amount		Amount			Provision		Amount
Amortization of prior service credits
and net actuarial loss	$	797	(a)	$	(168)	$	629	$	770	(a)	$	(270)	$	500
Equity in Telesat other comprehensive
income (loss)		2,194			(461)		1,733		(24,184)			8,469		(15,715)
Other comprehensive income (loss)	$	2,991		$	(629)	$	2,362	$	(23,414)		$	8,199	$	(15,215)

(a) Reclassifications are included in other expense.