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TOPIC 842 ADOPTION IMPACT AND LEASES: Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2019	Apr. 01, 2019	Mar. 31, 2019	Mar. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease, right-of-use asset	$ 20,930		$ 0
Short-term leases liabilities	8,443			$ 0
Long-term lease liabilities	16,000
Operating lease costs	2,200
2020	7,023
2021	8,699
2022	8,255
2023	2,497
2024	571
Thereafter	0
Leased office facilities
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
2020	1,886
2021	2,544
2022	2,610
2023	2,663
2024	2,699
Thereafter	$ 4,497
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease, right-of-use asset		$ 22,900
Short-term leases liabilities		8,400
Long-term lease liabilities		17,900
Deferred rent		$ 3,400