CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME
Revenues	$ 59,580us-gaap_SalesRevenueGoodsNet	$ 60,435us-gaap_SalesRevenueGoodsNet
Cost of goods sold	42,080us-gaap_CostOfGoodsSold	43,343us-gaap_CostOfGoodsSold
Gross margin	17,500us-gaap_GrossProfit	17,092us-gaap_GrossProfit
Operating costs and expenses:
Selling	2,208us-gaap_SellingAndMarketingExpense	2,110us-gaap_SellingAndMarketingExpense
General and administrative	5,553us-gaap_GeneralAndAdministrativeExpense	6,216us-gaap_GeneralAndAdministrativeExpense
Engineering and development	3,446amot_EngineeringAndDevelopmentExpense	3,517amot_EngineeringAndDevelopmentExpense
Amortization of intangible assets	662us-gaap_AmortizationOfIntangibleAssets	678us-gaap_AmortizationOfIntangibleAssets
Total operating costs and expenses	11,869us-gaap_OperatingExpenses	12,521us-gaap_OperatingExpenses
Operating income	5,631us-gaap_OperatingIncomeLoss	4,571us-gaap_OperatingIncomeLoss
Other expense (income):
Interest expense	1,515us-gaap_InterestExpense	1,638us-gaap_InterestExpense
Other income, net	(266)us-gaap_OtherNonoperatingIncomeExpense	(352)us-gaap_OtherNonoperatingIncomeExpense
Total other expense, net	1,249us-gaap_NonoperatingIncomeExpense	1,286us-gaap_NonoperatingIncomeExpense
Income before income taxes	4,382	3,285
Provision for income taxes	(1,406)us-gaap_IncomeTaxExpenseBenefit	(1,137)us-gaap_IncomeTaxExpenseBenefit
Net income	2,976	2,148
Basic earnings per share:
Earnings per share (in dollars per share)	$ 0.32us-gaap_EarningsPerShareBasic	$ 0.24us-gaap_EarningsPerShareBasic
Basic weighted average common shares (in shares)	9,208	9,130
Diluted earnings per share:
Earnings per share (in dollars per share)	$ 0.32us-gaap_EarningsPerShareDiluted	$ 0.24us-gaap_EarningsPerShareDiluted
Diluted weighted average common shares (in shares)	9,208	9,130
Net income	2,976	2,148
Foreign currency translation adjustment	(4,479)	7
Change in accumulated income (loss) on derivatives	(100)	(9)
Comprehensive (loss) income	$ (1,603)us-gaap_ComprehensiveIncomeNetOfTax	$ 2,146us-gaap_ComprehensiveIncomeNetOfTax

The aggregate total amount of expenses related to the Engineering of products or services not directly associated with the manufacture or sale of a product line, and the aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility.

No definition available.