Accumulated Other Comprehensive Loss (Tables)

6 Months Ended

Jun. 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 at 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 at December 31, 2017		(16,454)		(20,824)		(37,278)
Other comprehensive income before reclassification		—		7,352		7,352
Amounts reclassified from accumulated other comprehensive loss		420		—		420
Net current-period other comprehensive income		420		7,352		7,772
Balance at June 30, 2018	$	(16,034)	$	(13,472)	$	(29,506)

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 June 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	$	263	(a)	$	(56)	$	207	$	274	(a)	$	(95)	$	179
Equity in Telesat other comprehensive
income		532			(111)		421		—			—		—
Other comprehensive income	$	795		$	(167)	$	628	$	274		$	(95)	$	179

	Six Months Ended June 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	$	532	(a)	$	(112)	$	420	$	513	(a)	$	(180)	$	333
Equity in Telesat other comprehensive
income (loss)		9,309			(1,957)		7,352		(4,929)			1,737		(3,192)
Other comprehensive income (loss)	$	9,841		$	(2,069)	$	7,772	$	(4,416)		$	1,557	$	(2,859)

(a) Reclassifications are included in other expense.