Acquisition of New York Code and Design Academy - Purchase Price Allocation (Details) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended
	Jan. 13, 2016	Jun. 30, 2016	Sep. 30, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Goodwill			$ 20,793	$ 6,800
Cash paid for acquisition, net of cash acquired			$ 7,635
New York Code And Design Academy, Inc.
Business Acquisition [Line Items]
Cash	$ 790
Other assets	1,265
Trade name	5,660
Goodwill	13,993
Liabilities assumed	(4,783)
Total assets acquired and liabilities assumed, net	16,925
Contingent Consideration	(14,500)
Cash paid for acquisition, net of cash acquired	$ 1,635
Discount rate			4.50%
Measurement adjustment to goodwill		$ 200
Measurement adjustment to deferred tax liabilities		$ 200