INCOME TAXES (Details) - USD ($)	3 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Components of Deferred Tax Assets and Liabilities [Abstract]
Net operating loss carryforward		$ 155,000	$ 523,000
Allowance for doubtful accounts		519,000	671,000
Provision for accrued expenses and other, net		2,947,000	2,412,000
Stock based compensation		5,410,000	4,825,000
Deferred revenue		283,000	173,000
Tax credit carryforward		3,257,000	1,443,000
Deferred Tax Assets, Gross		12,571,000	10,047,000
Less valuation allowance		1,033,000	1,746,000
Deferred tax asset, net of valuation allowance		11,538,000	8,301,000
Acquired intangibles		(14,602,000)	(15,264,000)
Depreciation of fixed assets		(4,531,000)	(3,564,000)
Deferred Tax Liabilities		(19,133,000)	(18,828,000)
Deferred Tax Asset		306,000	322,000
Deferred tax liability		(7,901,000)	(10,849,000)
Net deferred tax liability		(7,595,000)	(10,527,000)
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal		5,048,000	10,201,000	$ 13,184,000
State		931,000	1,491,000	1,948,000
Foreign		2,259,000	3,500,000	3,753,000
Current Income Tax Expense		8,238,000	15,192,000	18,885,000
Federal		(891,000)	998,000	(1,048,000)
State		192,000	405,000	(448,000)
Foreign		(2,260,000)	(2,586,000)	(2,152,000)
Deferred Income Tax Expense (Benefit)		(2,959,000)	(1,183,000)	(3,648,000)
Income tax expense		5,279,000	14,009,000	15,237,000
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Federal statutory rate		(42,000)	1,064,000	14,997,000
Permanent items excluding nondeductible impairment		(210,000)	18,000	326,000
Nondeductible impairment		5,287,000	9,199,000	0
State taxes, net of federal effect		756,000	1,435,000	1,043,000
Difference between foreign and U.S. rates		297,000	2,366,000	(738,000)
Change in unrecognized tax benefits		(923,000)	46,000	774,000
Recognition of tax loss carryforwards		0	0	(1,832,000)
Gross tax on foreign dividend		5,084,000	0	0
Tax credits related to foreign dividend		(4,244,000)	0	0
Change in valuation allowance		(713,000)	0	0
Other		$ (13,000)	$ (119,000)	$ 667,000
Effective tax rate		(4436.10%)	460.70%	35.60%
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefits		$ 2,989,000	$ 3,122,000	$ 2,359,000
Increases in tax positions related to current year		117,000	169,000	608,000
Increases in tax positions related to prior year		0	76,000	201,000
Decreases in tax positions related to prior year		(43,000)	0	0
Lapse of statute of limitations		(910,000)	(378,000)	(46,000)
Unrecognized Tax Benefits		2,153,000	2,989,000	3,122,000
Domestic non-deductible impairment charge		15,100,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense		(86,000)	177,000	11,000
Unrecognized Tax Benefits, Gross		2,900,000	4,200,000	4,400,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued		361,000	447,000
Goodwill and Intangible Asset Impairment	$ 24,600,000	24,621,000	34,818,000
Foreign tax benefit excluding impairment		(446,000)
Domestic Income before Taxes excluding Impairment		18,300,000
Foreign Non Deductible Impairment Charge		263,000
Foreign income from operations before taxes excluding impairment		(3,100,000)
Foreign Earnings Repatriated		16,400,000
Tax benefit related to foreign tax credit carryforwards		(680,000)
Non Deductible Impairment Charge		15,400,000	33,600,000
Income (Loss) from Continuing Operations before Income Taxes, Domestic		3,200,000
Income (Loss) from Continuing Operations before Income Taxes, Foreign		(3,400,000)	(15,800,000)	2,900,000
Foreign Cash not Repatriated		19,000,000
Unrecognized Tax Benefits, Period Increase (Decrease)		923,000	(44,000)	(774,000)
Deferred Tax Liabilities, Other		840,000
Accrual for unrecognized tax benefits		2,513,000	$ 3,436,000	$ 3,400,000
Unrecognized Tax Benefits to be Recognized		$ 567,000