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Acquisitions (Narrative) (Details) - USD ($) |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Feb. 09, 2018 | Oct. 10, 2016 | Oct. 31, 2017 | Jun. 19, 2017 | Jun. 30, 2018
Business Acquisition [Line Items] |  |  |  |  |
Revenue from acquisitions included in consolidated results of operations |  |  |  |  | $ 26,300,000
Net income from acquisitions included in consolidated results of operations |  |  |  |  | 800,000
Symmetric Capital II LLC [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Shares issued in private placement |  | 1,290,323 |  |  |
Shares issued in private placement, value |  | $ 6,000,000 |  |  |
Western State Design [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Cash Consideration |  |  |  |  | $ 18,500,000
Stock Consideration |  |  |  |  | 2,044,990
Proceeds from line of credit |  |  |  |  | $ 12,500,000
Acquisition legal and other professional fees |  |  |  |  | 478,000
Total purchase price for accounting purposes |  |  |  |  | 34,600,000
Cash acquired |  |  |  |  | $ 5,100,000
Closing price |  |  |  |  | $ 7.85
Western State Design [Member] | Trade Names [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Indefinite lived intangible assets acquired |  |  |  |  | $ 2,400,000
Western State Design [Member] | Customer-related intangible assets [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Finite lived intangible assets acquired |  |  |  |  | $ 3,600,000
Amortized life |  |  |  |  | 10 years
Western State Design [Member] | Covenants not to compete [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Finite lived intangible assets acquired |  |  |  |  | $ 400,000
Amortized life |  |  |  |  | 5 years
Western State Design [Member] | Goodwill [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Amortized life |  |  |  |  | 15 years
Martin-Ray Acquisition [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Cash Consideration |  |  |  | $ 2,000,000 |
Stock Consideration |  |  |  | 98,668 |
Martin-Ray Acquisition [Member] | Trade Names [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Indefinite lived intangible assets acquired |  |  |  | $ 300,000 |
Martin-Ray Acquisition [Member] | Customer-related intangible assets [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Finite lived intangible assets acquired |  |  |  | 600,000 |
Martin-Ray Acquisition [Member] | Covenants not to compete [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Finite lived intangible assets acquired |  |  |  | 100,000 |
Martin-Ray Acquisition [Member] | Goodwill [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Finite lived intangible assets acquired |  |  |  | $ 2,600,000 |
Tri-State Technical Services [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Cash Consideration |  |  | $ 7,952,000 |  | $ 8,250,000
Stock Consideration |  |  | 338,115 |  | 338,115
Acquisition legal and other professional fees |  |  |  |  | $ 137,000
Total purchase price for accounting purposes |  |  |  |  | 17,300,000
Cash acquired |  |  |  |  | $ 1,800,000
Closing price |  |  |  |  | $ 26.70
Tri-State Technical Services [Member] | Trade Names [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Indefinite lived intangible assets acquired |  |  |  |  | $ 1,500,000
Tri-State Technical Services [Member] | Customer-related intangible assets [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Finite lived intangible assets acquired |  |  |  |  | $ 3,700,000
Amortized life |  |  |  |  | 10 years
Tri-State Technical Services [Member] | Goodwill [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Amortized life |  |  |  |  | 15 years
AA Acquisition [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Cash Consideration | $ 8,100,000 |  |  |  | $ 8,119,000
Stock Consideration | 348,360 |  |  |  | 348,360
Acquisition legal and other professional fees |  |  |  |  | $ 160,000
Total purchase price for accounting purposes |  |  |  |  | 20,400,000
Cash acquired |  |  |  |  | $ 900,000
Closing price |  |  |  |  | $ 35.45
AA Acquisition [Member] | Trade Names [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Indefinite lived intangible assets acquired |  |  |  |  | $ 1,800,000
AA Acquisition [Member] | Customer-related intangible assets [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Finite lived intangible assets acquired |  |  |  |  | $ 2,500,000
Amortized life |  |  |  |  | 10 years
AA Acquisition [Member] | Goodwill [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Amortized life |  |  |  |  | 15 years

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