A-Mark Precious Metals, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Secured Loans Receivables (Loans Receivable and Credit Quality Indicators) (Details)

Secured Loans Receivables (Loans Receivable and Credit Quality Indicators) (Details) $ in Thousands	9 Months Ended	12 Months Ended
	Mar. 31, 2016 USD ($) class	Jun. 30, 2015 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Classes of receivables \| class	3
Secured loan	$ 64,827	$ 49,316
Secured loan, percentage	100.00%	100.00%
Secured loans (current)	$ 64,227	$ 48,666
Bullion and Numismatic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Secured loan	$ 64,027	$ 48,466
Secured loan, percentage	98.80%	98.30%
Secured loans (current)	$ 64,027	$ 48,466
Secured loans (current), percentage	100.00%	100.00%
Bullion and Numismatic \| Loan-to-value of 75% or more
Accounts, Notes, Loans and Financing Receivable [Line Items]
Secured loans (current)	$ 15,303	$ 17,153
Secured loans (current), percentage	23.90%	35.40%
Bullion and Numismatic \| Loan-to-value of less than 75%
Accounts, Notes, Loans and Financing Receivable [Line Items]
Secured loans (current)	$ 48,724	$ 31,313
Secured loans (current), percentage	76.10%	64.60%
Bullion
Accounts, Notes, Loans and Financing Receivable [Line Items]
Secured loan	$ 25,212	$ 16,250
Secured loan, percentage	38.90%	33.00%
Numismatic and semi numismatic
Accounts, Notes, Loans and Financing Receivable [Line Items]
Secured loan	$ 38,815	$ 32,216
Secured loan, percentage	59.90%	65.30%
Other pledged assets
Accounts, Notes, Loans and Financing Receivable [Line Items]
Secured loan	$ 800	$ 850
Secured loan, percentage	1.20%	1.70%
Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Credit quality indicator Loan-to-value threshold percentage		75.00%