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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Equity - Non-controlling Interests (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Variable Interest Entity [Line Items]
Net income attributable to non-controlling interests	$ 1,115		$ 341		$ 1,662	$ 1,338
Carrying value of the investments held by Quanta in variable interest entities	9,700				9,700		$ 9,600
Carrying amount of investments held by non-controlling interests in VIEs	1,336				1,336		1,294
Distributions to non-controlling interests	1,092	$ 528	687	$ 980	1,600	1,700
Discharges of notes receivable			$ 500			$ 900
VIE
Variable Interest Entity [Line Items]
Carrying amount of investments held by non-controlling interests in VIEs	$ 1,300				$ 1,300		$ 1,300