Long-Term Debt (Summary of Quarterly Term Loan Principal Payments) (Details) $ in Thousands	3 Months Ended
Mar. 31, 2017 USD ($)
March 31, 2017 to June 30, 2017 [Member]
Debt Instrument [Line Items]
Quarterly principal payments	$ 1,250
September 30, 2017 to June 30, 2018 [Member]
Debt Instrument [Line Items]
Quarterly principal payments	1,875
September 30, 2018 to March 31, 2020 [Member]
Debt Instrument [Line Items]
Quarterly principal payments	$ 2,500

Amount of the required periodic payments including both interest and principal payments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

Name:	us-gaap_DebtInstrumentPeriodicPayment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration