breakdown of Joint Venture investment

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purchases from our Joint venture

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This element represents the aggregate cost of investments accounted for under the equity method of accounting.

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This item represents disclosure of the amount of dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporation; these investments are accounted for under the equity method of accounting. This element excludes distributions that constitute a return of investment, which are classified as investing activities.

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This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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Note 7 - Equity Investments in and Advances to Unconsolidated Affiliate (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2005
Note 7 - Equity Investments in and Advances to Unconsolidated Affiliate (Details) [Line Items]
Expense To Acquire Inventory	$ 19,040,000apt_ExpenseToAcquireInventory	$ 12,772,000apt_ExpenseToAcquireInventory
Income (Loss) from Equity Method Investments	300,000	210,000
Proceeds from Equity Method Investment, Dividends or Distributions	77,000
Harmony [Member] \| Alpha ProTech Engineered Products [Member]
Note 7 - Equity Investments in and Advances to Unconsolidated Affiliate (Details) [Line Items]
Equity Method Investment, Ownership Percentage			41.66%
Equity Method Investment, Aggregate Cost			508,000
Harmony [Member] \| Maple Industries And Associates [Member]
Note 7 - Equity Investments in and Advances to Unconsolidated Affiliate (Details) [Line Items]
Equity Method Investment, Ownership Percentage			58.34%
Equity Method Investment, Aggregate Cost			708,000
Harmony [Member]
Note 7 - Equity Investments in and Advances to Unconsolidated Affiliate (Details) [Line Items]
Equity Method Investment, Aggregate Cost	1,450,000
Equity Method Investment, Other than Temporary Impairment	0	0
Equity Method Investments	3,008,000
Cumulative Equity In Income of Unconsolidated Affiliate	2,577,000
Long Term Advance For Materials [Member] \| Alpha ProTech Engineered Products [Member]
Note 7 - Equity Investments in and Advances to Unconsolidated Affiliate (Details) [Line Items]
Equity Method Investment, Aggregate Cost	$ 942,000