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Supplemental Disclosures of Cash Flow Information and Non-Cash Financing and Investing Activities | 12 Months Ended
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Dec. 31, 2017
Supplemental Cash Flow Elements [Abstract] |
Supplemental Disclosures of Cash Flow Information and Non-Cash Financing and Investing Activities | The following is a reconciliation of cash and cash equivalents inclusive of restricted cash as of December 31, 2017, 2016 and 2015.
| Balance as of December 31,
(in thousands) | 2017 |  | 2016 |  | 2015
Table to reconcile cash and cash equivalents inclusive of restricted cash |  |  |  |  |
Cash and cash equivalents | $ | 573,383 |  |  | $ | 515,646 |  |  | 443,420 |
Restricted cash | 250,705 |  |  | 265,637 |  |  | 229,753 |
Total cash and cash equivalents inclusive of restricted cash at the end of the period | $ | 824,088 |  |  | $ | 781,283 |  |  | 673,173 |

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- Definition The entire disclosure for supplemental cash flow activities, including cash, noncash, and part noncash transactions, for the period. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 + Details
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