The increase (decrease) during the reporting period of the amounts due from borrowers for outstanding secured or unsecured loans evidenced by a note.

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Amount of Net Income (Loss) attributable to noncontrolling interest.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Equity - Non-controlling Interests (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Variable Interest Entity [Line Items]
Net income attributable to non-controlling interests	$ 954			$ 348			$ 2,616	$ 1,686
Carrying value of the investments held by Quanta in variable interest entities	10,200						10,200		$ 9,600
Carrying amount of investments held by non-controlling interests in VIEs	1,801						1,801		1,294
Distributions to non-controlling interests	489	$ 1,092	$ 528	1,275	$ 687	$ 980	2,100	2,900
Discharges of notes receivable				$ 500				$ 1,400
VIE
Variable Interest Entity [Line Items]
Carrying amount of investments held by non-controlling interests in VIEs	$ 1,800						$ 1,800		$ 1,300