The net cash outflow or inflow for a financial contract that meets the hedge criteria as either cash flow hedge, fair value hedge or hedge of net investment in foreign operations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3098-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 27
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3581-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3095-108585

Name:	us-gaap_PaymentsForProceedsFromHedgeFinancingActivities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Accumulated Other Comprehensive Loss - Narrative (Details) - USD ($)	1 Months Ended		12 Months Ended
	Aug. 31, 2010	Jul. 31, 2010	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Derivative [Line Items]
Payment to settle interest rate swap agreement			$ (550,000)	$ 0	$ 0
Interest Rate Swap
Derivative [Line Items]
Debt instrument, face amount		$ 250,000,000
Debt instrument, term		10 years
Payment to settle interest rate swap agreement	$ 8,700,000