Leases - Schedule of Aggregate Minimum Future Payments Required on Non-Cancelable Leases (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Minimum Capital Lease Payments
2019	$ 130
2020	104
2021	9
2022	2
Total Minimum Lease Payments - Capital Leases	245
Less: Amount Representing Interest	11
Capital Lease Obligation	234
Minimum Operating Lease Payments
2019	26,877
2020	23,445
2021	22,305
2022	22,190
2023	22,227
Thereafter	67,871
Total Minimum Lease Payments - Operating Leases	184,915
Less: Sublease Proceeds	14,182
Net Minimum Lease Payments - Operating Leases	$ 170,733

Net minimum operating lease payments.

No definition available.

Name:	pjt_NetMinimumOperatingLeasePayments
Namespace Prefix:	pjt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84164817&loc=d3e45280-112737