Organization and Operations of the Company - Additional Information (Detail)			1 Months Ended			6 Months Ended		39 Months Ended
	Jun. 11, 2013 USD ($) shares	Feb. 25, 2013 USD ($)	Jul. 31, 2019	Mar. 31, 2017 USD ($)	May 31, 2012 USD ($) shares	Jun. 30, 2020 USD ($) Employee $ / shares shares	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) Employee
Organization And Nature Of Operations [Line Items]
Aggregate gross proceeds on units purchased						$ 2,606,000
Shares purchased under equity transaction | shares						905,388
Offering period, description						The primary offering terminated on March 31, 2017.
Additional gross proceeds						$ 485,734,000
Percentage of investments (based on fair value of investments)						18.30%
COVID-19 [Member]
Organization And Nature Of Operations [Line Items]
Decline in net asset value per unit | $ / shares						$ 0.255
Class A Units [Member]
Organization And Nature Of Operations [Line Items]
Aggregate gross proceeds on units purchased						$ 2,174,806	$ 2,224,545
Shares purchased under equity transaction | shares						254,288
Decline in net asset value per unit | $ / shares						$ 0.255
Offering [Member]
Organization And Nature Of Operations [Line Items]
Aggregate gross proceeds on units purchased		$ 1,500,000,000
Private Placement [Member]
Organization And Nature Of Operations [Line Items]
Additional gross proceeds								$ 91,014,000
Distribution Reinvestment Plan [Member]
Organization And Nature Of Operations [Line Items]
Shares purchased under equity transaction | shares						583,304
Aggregate gross proceeds on units purchased						$ 4,647,000
Additional gross proceeds								$ 32,944,000
Termination of Primary Offering [Member]
Organization And Nature Of Operations [Line Items]
Aggregate gross proceeds on units purchased				$ 361,776,000
Termination of Primary Offering [Member] | Distribution Reinvestment Plan [Member]
Organization And Nature Of Operations [Line Items]
Aggregate gross proceeds on units purchased				$ 13,338,000
TriLinc Advisors, LLC [Member] | Class A Units [Member]
Organization And Nature Of Operations [Line Items]
Aggregate gross proceeds on units purchased					$ 200,000
Shares purchased under equity transaction | shares					22,161
TriLinc Global, LLC [Member]
Organization And Nature Of Operations [Line Items]
Formation date of limited liability company						Apr. 30, 2012
Primary offering termination date						Mar. 31, 2017
TriLinc Global, LLC [Member] | Class A Units [Member]
Organization And Nature Of Operations [Line Items]
Shares purchased under equity transaction | shares	321,330
Aggregate gross proceeds on units purchased	$ 2,900,000
TriLinc Global, LLC [Member] | TriLinc Advisors, LLC [Member]
Organization And Nature Of Operations [Line Items]
Percentage of ownership			100.00%			85.00%
Percentage of ownership interests acquired			15.00%
TriLinc Global, LLC [Member] | Maximum [Member]
Organization And Nature Of Operations [Line Items]
Number of employees for investments in SMEs | Employee						500		500
TriLinc Global, LLC [Member] | Minimum [Member] | Class A Units [Member]
Organization And Nature Of Operations [Line Items]
Minimum offering requirement	$ 2,000,000
Strategic Capital Advisory Services, LLC [Member] | TriLinc Advisors, LLC [Member]
Organization And Nature Of Operations [Line Items]
Percentage of ownership						15.00%