v3.10.0.1

Fair Value Measurement (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2018
Fair Value Disclosures [Abstract] |
Schedule of carrying values and fair values of debt instruments | The carrying values and fair values of debt instruments are as follows (in thousands):
|  | June 30, 2018 |  | December 31, 2017
|  | Carrying Value |  | Fair Value |  | Carrying Value |  | Fair Value
Bank line of credit |  | $ | 247,000 |  |  | $ | 247,000 |  |  | $ | 247,000 |  |  | $ | 247,000 |
Senior debt |  | 1,003,688 |  |  | 1,003,328 |  |  | 808,455 |  |  | 807,698 |
Subordinated debt |  | 153,674 |  |  | 152,214 |  |  | 111,488 |  |  | 111,095 |
Securitization debt |  | 93,247 |  |  | 88,726 |  |  | 95,821 |  |  | 96,999 |
SREC Loans |  | — |  |  | — |  |  | 32,181 |  |  | 32,181 |
Total |  | $ | 1,497,609 |  |  | $ | 1,491,268 |  |  | $ | 1,294,945 |  |  | $ | 1,294,973 |
Schedule of fair value, financial instruments measured on recurring basis | At June 30, 2018 and December 31, 2017, financial instruments measured at fair value on a recurring basis, based upon the fair value hierarchy are as follows (in thousands):
|  | June 30, 2018
|  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Derivative assets: |  |  |  |  |  |  |  |
Interest rate swaps |  | $ | — |  |  | $ | 24,257 |  |  | $ | — |  |  | $ | 24,257 |
Total |  | $ | — |  |  | $ | 24,257 |  |  | $ | — |  |  | $ | 24,257 |
Derivative liabilities: |  |  |  |  |  |  |  |
Interest rate swaps |  | $ | — |  |  | $ | 1,437 |  |  | $ | — |  |  | $ | 1,437 |
Total |  | $ | — |  |  | $ | 1,437 |  |  | $ | — |  |  | $ | 1,437 |
|  | December 31, 2017
|  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Derivative assets: |  |  |  |  |  |  |  |
Interest rate swaps |  | $ | — |  |  | $ | 1,917 |  |  | $ | — |  |  | $ | 1,917 |
Total |  | $ | — |  |  | $ | 1,917 |  |  | $ | — |  |  | $ | 1,917 |
Derivative liabilities: |  |  |  |  |  |  |  |
Interest rate swaps |  | $ | — |  |  | $ | 8,568 |  |  | $ | — |  |  | $ | 8,568 |
Total |  | $ | — |  |  | $ | 8,568 |  |  | $ | — |  |  | $ | 8,568 |

X
- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13476-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13467-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=75026489&loc=d3e13220-108610 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14172-108612 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611 + Details
Name: | us-gaap_FairValueByBalanceSheetGroupingTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_FairValueDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 + Details
Name: | us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration