Goodwill and Intangible Assets - Changes in the Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Goodwill, beginning Balance	$ 29,910	$ 29,910	$ 12,049
Goodwill, ending Balance		29,983	29,910
Zero2Ten, Branchbird and M2 Dynamics [Member]
Finite-Lived Intangible Assets [Line Items]
Adjustments to goodwill			17,861
M2 Dynamics [Member]
Finite-Lived Intangible Assets [Line Items]
Adjustments to goodwill	93	73
Classic Consulting [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill, beginning Balance	140	140	140
Goodwill, ending Balance		140	140
EPM [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill, beginning Balance	13,730	13,730	2,079
Goodwill, ending Balance		13,803	13,730
EPM [Member] | Zero2Ten, Branchbird and M2 Dynamics [Member]
Finite-Lived Intangible Assets [Line Items]
Adjustments to goodwill			11,651
EPM [Member] | M2 Dynamics [Member]
Finite-Lived Intangible Assets [Line Items]
Adjustments to goodwill		73
ERP [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill, beginning Balance	$ 16,040	16,040	9,830
Goodwill, ending Balance		$ 16,040	16,040
ERP [Member] | Zero2Ten, Branchbird and M2 Dynamics [Member]
Finite-Lived Intangible Assets [Line Items]
Adjustments to goodwill			$ 6,210