Income Taxes (Tables)

12 Months Ended

Dec. 31, 2017

Income Taxes [Abstract]

Components Of Deferred Tax Liabilities (Assets) [Table Text Block]

		2017		2016
Depreciation and amortization	$	30,982	$	44,903
Licenses and nonamortizable intangibles		16,129		22,892
Employee benefits		(6,202)		(10,045)
Deferred fulfillment costs		2,472		3,204
Net operating loss and other carryforwards		(6,067)		(4,304)
Other – net		1,222		(216)
Subtotal		38,536		56,434
Deferred tax assets valuation allowance		4,640		2,283
Net deferred tax liabilities	$	43,176	$	58,717
Noncurrent deferred tax liabilities	$	43,207	$	60,128
Less: Noncurrent deferred tax assets		(31)		(1,411)
Net deferred tax liabilities	$	43,176	$	58,717

Changes In Unrecognized Tax Benefits Balance For Federal, State, And Foreign Tax [Table Text Block]

Federal, State and Foreign Tax		2017		2016
Balance at beginning of year	$	6,516	$	6,898
Increases for tax positions related to the current year		1,438		318
Increases for tax positions related to prior years		200		473
Decreases for tax positions related to prior years		(461)		(1,168)
Lapse of statute of limitations		(28)		(25)
Settlements		(23)		50
Foreign currency effects		6		(30)
Balance at end of year		7,648		6,516
Accrued interest and penalties		1,333		1,140
Gross unrecognized income tax benefits		8,981		7,656
Less: Deferred federal and state income tax benefits		(388)		(557)
Less: Tax attributable to timing items included above		(2,368)		(3,398)
Total UTB that, if recognized, would impact the
effective income tax rate as of the end of the year	$	6,225	$	3,701

Components Of Income Tax Expense [Table Text Block]

		2017		2016		2015
Federal:
Current	$	682	$	2,915	$	2,496
Deferred		(17,970)		3,127		3,828
		(17,288)		6,042		6,324
State and local:
Current		79		282		72
Deferred		1,041		339		671
		1,120		621		743
Foreign:
Current		471		335		320
Deferred		989		(519)		(382)
		1,460		(184)		(62)
Total	$	(14,708)	$	6,479	$	7,005

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

		2017		2016		2015
U.S. income before income taxes	$	16,438	$	20,911	$	21,519
Foreign income (loss) before income taxes		(1,299)		(1,099)		(827)
Total	$	15,139	$	19,812	$	20,692

Reconciliation Of Income Tax Expense Based On Federal Statutory Rate To Amount Per Effective Tax Rate [Table Text Block]

		2017			2016			2015
Taxes computed at federal statutory rate	$	5,299		$	6,934		$	7,242
Increases (decreases) in income taxes resulting from:
State and local income taxes – net of federal income tax benefit		509			416			483
Enactment of the Tax Cuts and Jobs Act		(20,271)			-			-
Mexico restructuring		-			(471)			-
Other – net		(245)			(400)			(720)
Total	$	(14,708)		$	6,479		$	7,005
Effective Tax Rate		(97.2)	%		32.7	%		33.9	%