STOCK OPTIONS OUTSTANDING (Details) - $ / shares	Sep. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Stock options Outstanding	898,899	1,074,251	1,321,232
Weighted Average Exercise Price on Outstanding Options	$ 10.471	$ 9.800
Stock Options Exercisable		10.111	$ 10.386
Weighted Average Exercise Price on Exercisable Options	$ 10.835	$ 10.110
$ 4.40 - $ 6.90
Stock options Outstanding	226,552
Average Remaining Contractual Life in Years	$ 5.15
Weighted Average Exercise Price on Outstanding Options	5.596
Stock Options Exercisable	218,699
Weighted Average Exercise Price on Exercisable Options	$ 5.558
$ 6.91 - $ 7.36
Stock options Outstanding	183,294
Average Remaining Contractual Life in Years	$ 8.14
Weighted Average Exercise Price on Outstanding Options	7.360
Stock Options Exercisable	82,483
Weighted Average Exercise Price on Exercisable Options	$ 7.360
$ 7.37 - $ 12.34
Stock options Outstanding	181,242
Average Remaining Contractual Life in Years	$ 7.04
Weighted Average Exercise Price on Outstanding Options	9.069
Stock Options Exercisable	138,633
Weighted Average Exercise Price on Exercisable Options	$ 9.205
$ 12.35 - $ 17.17
Stock options Outstanding	119,261
Average Remaining Contractual Life in Years	$ 1.67
Weighted Average Exercise Price on Outstanding Options	14.038
Stock Options Exercisable	115,489
Weighted Average Exercise Price on Exercisable Options	$ 14.007
$ 17.18 - $ 32.21
Stock options Outstanding	188,550
Average Remaining Contractual Life in Years	$ 7.03
Weighted Average Exercise Price on Outstanding Options	20.181
Stock Options Exercisable	104,872
Weighted Average Exercise Price on Exercisable Options	$ 26.015
$ 4.40 - $32.21
Stock options Outstanding	898,899
Average Remaining Contractual Life in Years	$ 6.07
Weighted Average Exercise Price on Outstanding Options	10.835
Stock Options Exercisable	660,176
Weighted Average Exercise Price on Exercisable Options	$ 10.471