Income Taxes - Schedule of Tax Years Subject to Examination (Details) |
12 Months Ended |
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Dec. 31, 2017 | |
| Domestic Tax Authority [Member] | Earliest Tax Year [Member] | |
| Open tax year | 2013 |
| Domestic Tax Authority [Member] | Latest Tax Year [Member] | |
| Open tax year | 2017 |
| State and Local Jurisdiction [Member] | Earliest Tax Year [Member] | |
| Open tax year | 2012 |
| State and Local Jurisdiction [Member] | Latest Tax Year [Member] | |
| Open tax year | 2017 |
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- Definition Tax year that remains open to examination under enacted tax laws, in CCYY format. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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